WO2017043547A1 - Sliding bearing - Google Patents

Sliding bearing Download PDF

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Publication number
WO2017043547A1
WO2017043547A1 PCT/JP2016/076348 JP2016076348W WO2017043547A1 WO 2017043547 A1 WO2017043547 A1 WO 2017043547A1 JP 2016076348 W JP2016076348 W JP 2016076348W WO 2017043547 A1 WO2017043547 A1 WO 2017043547A1
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WO
WIPO (PCT)
Prior art keywords
center plate
upper case
lower case
dust seal
annular
Prior art date
Application number
PCT/JP2016/076348
Other languages
French (fr)
Japanese (ja)
Inventor
山田　智博
Original Assignee
オイレス工業株式会社
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Filing date
Publication date
Application filed by オイレス工業株式会社 filed Critical オイレス工業株式会社
Publication of WO2017043547A1 publication Critical patent/WO2017043547A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment

Definitions

  • the present invention relates to a sliding bearing that supports a load to be supported, and more particularly, to a sliding bearing that supports the load of a vehicle body applied to the strut suspension while allowing the strut assembly of a strut suspension (McPherson strut) to rotate.
  • McPherson strut a strut suspension
  • the strut suspension used for the front wheels of automobiles has a structure in which a coil spring is combined with a strut assembly including a piston rod and a hydraulic shock absorber, and the strut assembly rotates together with the coil spring by a steering operation. Therefore, in order to support the load applied to the strut suspension while allowing the strut assembly to rotate smoothly, the upper mount, which is a mechanism for attaching the strut assembly to the vehicle body, and the spring seat at the upper end of the coil spring are usually used. A bearing is disposed between the upper spring seat.
  • Patent Document 1 discloses a sliding bearing made of synthetic resin as a bearing for a strut suspension.
  • This sliding bearing is composed of a synthetic resin upper case attached to the upper mount side, a synthetic resin lower case attached to the upper spring seat side and rotatably coupled to the upper case, and between the upper case and the lower case.
  • a synthetic resin center plate for smoothly rotating.
  • a plurality of grooves functioning as a lubricating grease reservoir are formed on the bearing surface of the center plate, and these grooves are filled with lubricating grease.
  • a dust seal that closes the gap between the upper case and the lower case connected to the annular space is disposed in the annular space.
  • a dust seal closes a gap connected to the outside of the annular space formed by combining the upper case and the lower case. , Muddy water and the like can be prevented from entering the annular space, and therefore, dust, muddy water and the like can be prevented from entering the bearing surface of the center plate disposed in the annular space to reduce the sliding performance. be able to.
  • the dust seal includes a cylindrical seal body and an annular lip portion formed integrally with the seal body.
  • An elastic body such as a polyurethane resin, a polyester elastomer, or a synthetic rubber is used for the dust seal in order to close the gap between the upper case and the lower case connected to the annular space by the lip portion being bent and contacting the wall surface of the annular space.
  • a core metal is embedded in the seal body to increase the rigidity of the seal body.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a slide bearing that can prevent a decrease in sliding performance due to entry of dust, muddy water, and the like at a lower cost. .
  • both ends are opposed to the outer peripheral side of the annular center plate in the axial direction of the annular space.
  • An annular dust seal that contacts the two wall surfaces is disposed, and this dust seal is connected to the center plate at a connecting portion extending radially outward from the outer peripheral side of the center plate, so that the center plate and the dust seal are integrally formed.
  • one of the two wall surfaces facing the axial direction of the annular space is engaged with a connecting portion for connecting the center plate and the dust seal in the circumferential direction to prevent the center plate and the dust seal from rotating,
  • a detent that contacts the outer peripheral side and restricts deformation of the center plate in the radially outward direction may be formed.
  • the sliding bearing of the present invention is An upper case, A lower case that is rotatably combined with the upper case to form an annular space with the upper case; An annular center plate disposed in the annular space; An annular dust seal disposed on the outer peripheral side of the center plate, The dust seal is Both end portions are in contact with a surface facing the upper case of the lower case and a surface facing the lower case of the upper case,
  • the center plate is A connecting portion that extends radially outward from the outer peripheral side of the center plate and connects to the dust seal.
  • the sliding bearing supports a load to be supported
  • the upper case is Having an annular groove formed on the surface facing the lower case;
  • the lower case is Formed on a surface facing the upper case, and having an annular protrusion that forms the annular space by being inserted into the annular groove of the upper case,
  • the center plate is The upper case and the lower case are allowed to rotate by being placed on the annular protrusion of the lower case and in sliding contact with a support target surface formed on the groove bottom of the annular groove of the upper case.
  • the dust seal is You may arrange
  • the sliding bearing supports the load of the vehicle body applied to the strut suspension while allowing the strut assembly of the strut suspension to rotate.
  • the upper case is attached to a mounting mechanism of the strut assembly to the vehicle body in a state where the strut assembly is inserted
  • the lower case is attached to a spring seat at an upper end portion of a coil spring combined with the strut assembly in a state where the strut assembly is inserted
  • the center plate may be disposed in the annular space in a state where the strut assembly is inserted.
  • the annular dust seal in the annular space formed by combining the upper case and the lower case, is disposed so that both end portions are in contact with the two wall surfaces facing the axial direction of the annular space. Even without embedding gold and increasing the rigidity, the sealing force sufficient to close the gap connected to the outside of the annular space can be obtained by the reaction force of the dust seal against the load to be supported applied in the axial direction of the annular space. Further, since the dust seal is connected to the center plate by a connecting portion extending radially outward from the outer peripheral side of the center plate, it is not necessary to prepare the dust seal as a separate part, and the number of parts of the slide bearing can be reduced. . Therefore, according to the present invention, it is possible to prevent a decrease in sliding performance due to intrusion of dust, muddy water, etc. at a lower cost.
  • FIG. 1A, FIG. 1B, and FIG. 1C are a plan view, a bottom view, and a front view of a plain bearing 1 according to an embodiment of the present invention
  • FIG. FIG. 2 is a cross-sectional view taken along the line AA of the plain bearing 1 shown in FIG. 2A is an enlarged view of a portion B of the plain bearing 1 shown in FIG. 1D
  • FIG. 2B is an enlarged view of a portion C of the plain bearing 1 shown in FIG. 3A, 3B, and 3C are a plan view, a bottom view, and a front view of the upper case 2
  • FIG. 3D is an upper case shown in FIG. FIG.
  • FIG. 4A, 4B, and 4C are a plan view, a bottom view, and a front view of the lower case 3, and FIG. 4D is a lower case shown in FIG. 4A.
  • 3 is a sectional view taken along line EE of FIG. 5A, 5B, and 5C are a plan view, a bottom view, and a front view of the dust seal-integrated center plate 4, and FIG. 5D is shown in FIG.
  • FIG. 5 (E) is an enlarged view of the G part of the dust seal integrated center plate 4 shown in FIG. 5 (D), and FIG. FIG. 6 is an enlarged view of a portion H of the dust seal integrated center plate 4 shown in FIG.
  • FIG. 6 (A) and 6 (B) are diagrams for explaining modified examples 7a and 7b of the dust seal portion 7 of the dust seal integrated center plate 4 and correspond to FIG. 2 (B).
  • FIG. 7 is a view for explaining a modification 4a of the dust seal-integrated center plate 4 and corresponds to FIG. 2 (B).
  • FIG. 1A, FIG. 1B, and FIG. 1C are a plan view, a bottom view, and a front view of a plain bearing 1 according to the present embodiment
  • FIG. FIG. 2 is a cross-sectional view taken along the line AA of the plain bearing 1 shown in FIG. 2A is an enlarged view of a portion B of the plain bearing 1 shown in FIG. 1D
  • FIG. 2B is an enlarged view of a portion C of the plain bearing 1 shown in FIG. 1D. is there.
  • the sliding bearing 1 includes a housing hole 10 for housing a strut assembly (not shown) of a strut suspension, and allows the strut assembly housed in the housing hole 10 to rotate. Supports the body load applied to the strut suspension.
  • the plain bearing 1 includes an upper case 2, a lower case 3 that is rotatably combined with the upper case 2, and forms an annular space 5 between the upper case 2 and the annular space 5.
  • the dust seal integrated center plate 4 and a lubricating grease filled in the annular space 5 are provided.
  • the upper case 2 is formed of a thermoplastic resin having excellent sliding characteristics such as a polyacetal resin impregnated with lubricating oil as necessary, and the strut assembly strut assembly is inserted into the vehicle body in a state where the strut assembly is inserted. It is attached to an upper support (not shown) which is an attachment mechanism.
  • FIG. 3A, 3B, and 3C are a plan view, a bottom view, and a front view of the upper case 2, and FIG. 3D is an upper case shown in FIG. FIG.
  • the upper case 2 is formed on an annular upper case main body 21 having an insertion hole 20 for inserting a strut assembly, and an upper surface 22 of the upper case main body 21, and is attached to an upper support.
  • an annular groove 25 formed on the lower surface 24 of the upper case main body 21 facing the lower case 3 and rotatably combined with the lower case 3, and a groove bottom 26 of the annular groove 25.
  • an annular support target surface 27 that is in sliding contact with a bearing surface 62 (see FIG. 5) of a center plate portion 6 (described later) of the dust seal integrated center plate 4.
  • annular barrier wall 28 that protrudes from the groove bottom 26 toward the lower surface 24 is formed on the outer peripheral side of the support target surface 27.
  • the barrier wall 28 surrounds the outer peripheral side of the center plate portion 6 of the dust seal-integrated center plate 4 disposed in the annular space 5, and lubricates the annular space 5 when a load is applied to the strut suspension. The grease is prevented from being pushed radially outward from the bearing surface 62 of the center plate portion 6 of the dust seal integrated center plate 4.
  • the lower case 3 is a resin molded body using a thermoplastic resin such as polyamide resin, and is a spring seat at the upper end of a coil spring (not shown) of the strut suspension in a state where the strut assembly of the strut suspension is inserted. It is attached to an upper spring seat (not shown).
  • FIG. 4A, 4B, and 4C are a plan view, a bottom view, and a front view of the lower case 3, and FIG. 4D is a lower case shown in FIG. 4A.
  • 3 is a sectional view taken along line EE of FIG.
  • the lower case 3 is formed on a cylindrical lower case body 31 having an insertion hole 30 for inserting a strut assembly and an upper surface 32 of the lower case body 31 facing the upper case 2.
  • an annular protrusion 33 that is inserted into the annular groove 25 formed in the lower surface 24 of the upper case body 21 of the upper case 2 to form the annular space 5;
  • a flange 35 projecting radially outward from the side surface 34 of the lower case main body 31.
  • a mounting surface 331 for mounting the center plate portion 6 of the dust seal integrated center plate 4 is formed on the upper surface 330 of the annular protrusion 33, and an arcuate shape is formed on the outer peripheral side of the mounting surface 331.
  • a plurality of detents 332 protruding in the circumferential direction are formed at equal intervals in the circumferential direction.
  • the rotation stopper 332 engages with a connecting arm portion 8 (see FIG. 5), which will be described later, of the dust seal-integrated center plate 4 in the circumferential direction to prevent the dust seal-integrated center plate 4 from rotating and the dust seal-integrated center plate. It contacts the outer peripheral side of the center plate portion 6 of the plate 4 to prevent the center plate portion 6 from deforming radially outward.
  • detents 332 are provided, but the same number of detents 332 as the number of connecting arm portions 8 of the dust seal integrated center plate 4 may be provided. At this time, it is preferable to adjust the length of the arc of the rotation stopper 332 so that the width of the gap 334 in which the connection arm portion 8 is disposed is made constant.
  • the flange 35 protrudes radially outward from the outer peripheral side surface 34 of the lower case main body 31 on the upper surface 32 side of the lower case main body 31, and the lower surface 36 of the flange 35 is attached to the upper spring seat.
  • the dust seal integrated center plate 4 is formed of a thermoplastic resin having excellent sliding characteristics such as a polyolefin resin impregnated with a lubricating oil as required, and allows free rotation between the upper case 2 and the lower case 3. At the same time, the vehicle body load applied to the strut suspension transmitted to the upper case 2 is supported. In addition, a gap connected to the outside of the annular space 5 is closed to prevent foreign matters such as dust from entering the annular space 5.
  • FIG. 5A, 5B, and 5C are a plan view, a bottom view, and a front view of the dust seal-integrated center plate 4, and FIG. 5D is shown in FIG.
  • FIG. 5 (E) is an enlarged view of the G part of the dust seal integrated center plate 4 shown in FIG. 5 (D)
  • FIG. FIG. 6 is an enlarged view of a portion H of the dust seal integrated center plate 4 shown in FIG.
  • the dust seal-integrated center plate 4 connects an annular center plate portion 6, a cylindrical dust seal portion 7 disposed on the outer peripheral side of the center plate portion 6, and the center plate portion 6 and the dust seal portion 7. Connecting arm portion 8 to be connected.
  • the center plate portion 6 is formed to project downward in the axial direction from the inner peripheral side of the annular center plate main body 60, the bearing surface 62 formed on the upper surface 61 of the center plate main body 60, and the lower surface 63 of the center plate main body 60. And a cylindrical rib 64.
  • a large number of lubricating grease reservoirs 65 are formed on the bearing surface 62. Note that, in FIG. 5, only a part of the lubricating grease reservoir 65 is denoted by a symbol for simplification of the drawing.
  • the rib 64 is formed so that the lower surface 63 of the center plate body 60 and the mounting surface 331 of the annular protrusion 33 provided on the lower case body 31 of the lower case 3 are in contact with each other, so that the center plate 4 is placed on the lower case 3. When placed, it is inserted inside the annular projection 33.
  • the dust seal portion 7 is in contact with a lower end portion 280 of a barrier 28 formed by projecting downward on the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2 in the axial direction.
  • the other end 71 in the direction comes into contact with the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3.
  • a gap connected to the outside of the annular space 5 is closed, and foreign matters such as dust are formed on the bearing surface 62 of the center plate portion 6 and the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2. Intrusion between the support target surface 27 is prevented.
  • the dust seal portion 7 is formed thinner than the center plate portion 6, and one end portion 70 in contact with the upper case 2 side is inclined radially outward in the axial sectional shape. Therefore, one end portion 70 of the dust seal portion 7 contacts the barrier wall 28 formed on the groove bottom 26 of the annular groove 25 of the upper case main body 21 of the upper case 2 while being bent (see FIG. 2).
  • the reaction force of the dust seal portion 7 acting on the load of the vehicle body applied to the strut type suspension provides a sufficient sealing performance to close the gap connected to the outside of the annular space 5.
  • the connecting arm portion 8 extends radially outward from the outer peripheral side of the center plate portion 6 and is connected to the dust seal portion 7. Further, the connecting arm portion 8 has a circumferential width narrower than a gap 334 between the rotation stoppers 332 formed on the mounting surface 331 of the annular protrusion 33 of the lower case body 31 of the lower case 3, By being arranged in the gap 334, the center plate portion 6 is placed on the placement surface 331. Then, when the connecting arm portion 8 is engaged with the rotation stopper 332 in the circumferential direction, the rotation of the dust seal integrated center plate 4 is prevented. In the present embodiment, six connection arm portions 8 are provided, but at least one connection arm portion 8 may be provided.
  • the dust seal integrated center plate 4 is formed on the mounting surface 331 of the annular protrusion 33 of the lower case main body 31 of the lower arm 3 and the connecting arm portion 8.
  • the center plate portion 6 is placed on the placement surface 331 in a state where the rotation is prevented by the circumferential coupling with the rotation stopper 332, and the bearing surface 62 of the center plate portion 6 is the upper case body of the upper case 2. 21 is in sliding contact with the support target surface 27 of the annular groove 25 formed on the lower surface 24 of the member 21.
  • the dust seal integrated center plate 4 is supported by the upper spring seat attached to the lower surface 36 of the flange 35 of the lower case 3 and the coil spring of the strut suspension, and rotates between the upper case 2 and the lower case 3. While allowing, the load of the vehicle body applied to the strut suspension transmitted to the upper case 4 is supported.
  • one end 70 in the axial direction of the dust seal portion 7 is the annular groove 25 of the upper case body 21 of the upper case 2.
  • the other end 71 in the axial direction is in contact with the upper surface 330 side of the annular protrusion 33 of the lower case body 31 of the lower case 3. Since the dust seal integrated center plate 4 is disposed in the annular space 5, the reaction force of the dust seal portion 7 against the load of the vehicle body applied to the strut suspension does not increase the rigidity by embedding the core metal in the dust seal portion 7. It is possible to obtain a sufficient sealing property to close the gap connected to the outside of the annular space 5.
  • the dust seal portion 7 is connected to the center plate portion 6 by a connecting arm portion 8 extending radially outward from the outer peripheral side of the center plate portion 6 and is integrally formed with the center plate portion 6, the dust seal portion 7 need not be prepared as a separate part, and the number of parts of the sliding bearing 1 can be reduced. Therefore, according to the present embodiment, it is possible to prevent a decrease in sliding performance due to intrusion of dust, muddy water, and the like at a lower cost.
  • the rotation stopper 332 protruding in an arc shape is formed on the outer peripheral side of the mounting surface 331 formed on the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3. .
  • the rotation stopper 332 engages with the connecting arm portion 8 of the dust seal integrated center plate 4 in the circumferential direction to prevent the dust seal integrated center plate 4 from rotating and the center plate portion of the dust seal integrated center plate 4. 6 abuts against the outer peripheral side of the center plate 6 and prevents the center plate portion 6 from being deformed radially outward by the load of the vehicle body applied to the strut suspension. Therefore, according to this Embodiment, it can prevent that the arrangement position of the dust seal part 7 shifts
  • the bearing surface 62 of the center plate portion 6 of the dust seal integrated center plate 4 since a large number of lubricating grease reservoirs 65 are formed on the bearing surface 62 of the center plate portion 6 of the dust seal integrated center plate 4, more lubricating grease can be retained on the bearing surface 62. it can. For this reason, the bearing surface 62 can be covered with a lubricating grease film, and the load of the vehicle body applied to the strut suspension can be supported for a longer period while allowing the strut assembly of the strut suspension to rotate smoothly. it can.
  • An annular barrier 28 surrounding the outer peripheral side of the center plate portion 6 of the disposed dust seal-integrated center plate 4 is provided.
  • the barrier wall 28 prevents the lubricating grease filled in the annular space 5 from being pushed radially outward from the bearing surface 62 of the center plate portion 6 when a load is applied to the strut suspension.
  • the surface 62 can be more reliably covered with the lubricating grease film. Therefore, the load of the vehicle body applied to the strut suspension can be supported for a longer period while allowing the strut assembly of the strut suspension to smoothly rotate.
  • the detent 332 is formed on the outer peripheral side of the mounting surface 331 formed on the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3. Is not limited to this.
  • a rotation stopper is formed on the outer peripheral side of the support target surface 27 formed on the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2, and this rotation stopper is connected to the connecting arm portion 8 of the dust seal integrated center plate 4.
  • one axial end portion 70 of the dust seal portion 7 of the dust seal integrated center plate 4 is positioned below the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2. Although it is made to contact
  • the present invention is not limited to this.
  • the dust seal portion 7 may have an axial cross-sectional shape in which at least one of the both end portions 70 and 71 is inclined radially outward or radially inward.
  • the end portions 70 and 71 may be inclined radially outward in the axial cross-sectional shape.
  • the end portion 71 that is in contact with the upper surface 330 side of the annular protrusion 33 of the lower case main body 31 of the lower case 3 is radially You may incline in the direction.
  • the dust seal portion 9 that closes the gap 50 connected to the annular space 5 is integrated with the end portion 640 of the rib 64 of the center plate portion 6 on the lower case 3 side. It may be formed.
  • the dust seal integrated center plate 4 is placed and fixed on the lower case 3, but the dust seal integrated center plate 4 is rotatably mounted on the lower case 3. Also good. That is, similarly to the upper surface 60 of the center plate portion 6, a bearing surface is also formed on the lower surface 63 of the center plate portion 6, and this bearing surface is formed on the upper surface 32 of the lower case body 31 of the lower case 3. You may make it contact with the mounting surface 331 of the part 33 so that sliding is possible. In this case, the rotation stopper 332 disposed on the outer peripheral side of the mounting surface 331 of the annular protrusion 33 is not necessary. Further, since a large amount of lubricating grease is held on the bearing surface formed on the lower surface 63 of the center plate portion 6, a large number of lubricating grease reservoirs may be formed on this bearing surface.
  • slide bearing of the present invention can be widely applied to a slide bearing that supports a load applied to the shaft member while allowing the shaft member to rotate in various mechanisms including a strut suspension.

Abstract

The present invention prevents reduction in sliding performance caused by the entry of dust, muddy water, etc., at lower cost. In an annular space (5) formed by combining an upper case (2) and a lower case (3), a dust seal integrated center plate (4) is placed in the annular space (5) so that one end part (70) of a dust seal section (7) in an axial direction abuts a protective wall (28) formed so as to project downward from a groove bottom (26) of an annular groove (25) of an upper case body (21) of the upper case (2) and so that the other end part (71) in the axial direction abuts an upper surface (330) side of an annular projected part (33) of a lower case body (31) of the lower case (3). The dust seal section (7) is coupled to a center plate section (6) by means of a connection arm section (8) extending radially outward from the outer circumferential side of the center plate section (6), and formed integrally with the center plate section (6).

Description

滑り軸受Plain bearing
　本発明は、支持対象の荷重を支持する滑り軸受に関し、特に、ストラット式サスペンション（マクファーソンストラット）のストラットアッセンブリの回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持する滑り軸受に関する。 The present invention relates to a sliding bearing that supports a load to be supported, and more particularly, to a sliding bearing that supports the load of a vehicle body applied to the strut suspension while allowing the strut assembly of a strut suspension (McPherson strut) to rotate.
　自動車の前輪に用いられるストラット式サスペンションは、ピストンロッドおよび油圧式ショックアブソーバを備えたストラットアッセンブリに、コイルスプリングを組み合わせた構造を有しており、ステアリング操作によってストラットアッセンブリがコイルスプリングと共に回動する。このため、ストラットアッセンブリの円滑な回動を許容しつつ、ストラット式サスペンションに加わる荷重を支持するべく、通常、車体へのストラットアッセンブリの取付機構であるアッパーマウントとコイルスプリングの上端部のばね座であるアッパースプリングシートとの間に、軸受が配置されている。 The strut suspension used for the front wheels of automobiles has a structure in which a coil spring is combined with a strut assembly including a piston rod and a hydraulic shock absorber, and the strut assembly rotates together with the coil spring by a steering operation. Therefore, in order to support the load applied to the strut suspension while allowing the strut assembly to rotate smoothly, the upper mount, which is a mechanism for attaching the strut assembly to the vehicle body, and the spring seat at the upper end of the coil spring are usually used. A bearing is disposed between the upper spring seat.
　例えば、特許文献１には、ストラット式サスペンション用の軸受として、合成樹脂製の滑り軸受が開示されている。この滑り軸受は、アッパーマウント側に取り付けられる合成樹脂製のアッパーケースと、アッパースプリングシート側に取り付けられ、アッパーケースに回動自在に組み合わされる合成樹脂製のロワーケースと、アッパーケースおよびロワーケース間を円滑に回動させるための合成樹脂製のセンタープレートと、を備えている。ここで、センタープレートの軸受面には、潤滑グリース溜りとして機能する複数の溝が形成されており、これらの溝に潤滑グリースが充填されている。また、環状空間には、この環状空間に繋がるアッパーケースおよびロワーケースの隙間を塞ぐダストシールが配置されている。 For example, Patent Document 1 discloses a sliding bearing made of synthetic resin as a bearing for a strut suspension. This sliding bearing is composed of a synthetic resin upper case attached to the upper mount side, a synthetic resin lower case attached to the upper spring seat side and rotatably coupled to the upper case, and between the upper case and the lower case. And a synthetic resin center plate for smoothly rotating. Here, a plurality of grooves functioning as a lubricating grease reservoir are formed on the bearing surface of the center plate, and these grooves are filled with lubricating grease. Further, a dust seal that closes the gap between the upper case and the lower case connected to the annular space is disposed in the annular space.
　特許文献１に記載の合成樹脂製の滑り軸受によれば、ダストシールにより、アッパーケースおよびロワーケースを組み合わせることにより形成される環状空間の外部に繋がる隙間が塞がれ、過酷な条件下でも、塵埃、泥水等がこの環状空間に侵入するのを防止でき、したがって、この環状空間に配置されたセンタープレートの軸受面上に塵埃、泥水等が侵入して、摺動性能が低下するのを防止することができる。 According to the synthetic resin sliding bearing described in Patent Document 1, a dust seal closes a gap connected to the outside of the annular space formed by combining the upper case and the lower case. , Muddy water and the like can be prevented from entering the annular space, and therefore, dust, muddy water and the like can be prevented from entering the bearing surface of the center plate disposed in the annular space to reduce the sliding performance. be able to.
特開２０１２－１７２８１４号公報JP 2012-172814 A
　特許文献１に記載の合成樹脂製の滑り軸受において、ダストシールは、筒状のシール本体と、シール本体に一体的に形成された環状のリップ部と、を備える。リップ部が環状空間の壁面に撓んで接触することにより、環状空間に繋がるアッパーケースおよびロワーケースの隙間を塞ぐため、ダストシールには、ポリウレタン樹脂、ポリエステルエラストマー、合成ゴム等の弾性体が用いられる。また、リップ部を適度な力で環状空間の壁面に接触させて、リップ部のシール性を向上させるために、シール本体に芯金を埋め込んで、シール本体の剛性を上げている。特許文献１に記載の合成樹脂製の滑り軸受では、このような芯金を備えたダストシールを追加する必要があり、滑り軸受のコストが増加するという問題がある。 In the synthetic resin sliding bearing described in Patent Document 1, the dust seal includes a cylindrical seal body and an annular lip portion formed integrally with the seal body. An elastic body such as a polyurethane resin, a polyester elastomer, or a synthetic rubber is used for the dust seal in order to close the gap between the upper case and the lower case connected to the annular space by the lip portion being bent and contacting the wall surface of the annular space. Further, in order to bring the lip portion into contact with the wall surface of the annular space with an appropriate force and improve the sealing performance of the lip portion, a core metal is embedded in the seal body to increase the rigidity of the seal body. In the synthetic resin-made sliding bearing described in Patent Document 1, it is necessary to add a dust seal having such a mandrel, which increases the cost of the sliding bearing.
　本発明は、上記事情に鑑みてなされたものであり、その目的は、より低コストで、塵埃、泥水等の侵入による摺動性能の低下を防止することができる滑り軸受を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a slide bearing that can prevent a decrease in sliding performance due to entry of dust, muddy water, and the like at a lower cost. .
　上記課題を解決するために、本発明の滑り軸受では、アッパーケースおよびロワーケースを組み合わせることにより形成される環状空間において、環状のセンタープレートの外周側に、両端部が環状空間の軸方向に対向する２つの壁面に接触する環状のダストシールを配置するとともに、センタープレートの外周側から径方向外方に延びる連結部でセンタープレートにこのダストシールを連結して、センタープレートおよびダストシールを一体的に形成した。ここで、環状空間の軸方向に対向する２つの壁面の一方に、センタープレートおよびダストシールを連結する連結部と円周方向に係合してセンタープレートおよびダストシールの回転を防止するとともに、センタープレートの外周側と当接してセンタープレートの径方向外方への変形を規制する回り止めを形成してもよい。 In order to solve the above problems, in the sliding bearing of the present invention, in the annular space formed by combining the upper case and the lower case, both ends are opposed to the outer peripheral side of the annular center plate in the axial direction of the annular space. An annular dust seal that contacts the two wall surfaces is disposed, and this dust seal is connected to the center plate at a connecting portion extending radially outward from the outer peripheral side of the center plate, so that the center plate and the dust seal are integrally formed. . Here, one of the two wall surfaces facing the axial direction of the annular space is engaged with a connecting portion for connecting the center plate and the dust seal in the circumferential direction to prevent the center plate and the dust seal from rotating, A detent that contacts the outer peripheral side and restricts deformation of the center plate in the radially outward direction may be formed.
　例えば、本発明の滑り軸受は、
　アッパーケースと、
　前記アッパーケースに回動自在に組み合わされて、当該アッパーケースとの間に環状空間を形成するロワーケースと、
　前記環状空間に配置された環状のセンタープレートと、
　前記センタープレートの外周側に配置された環状のダストシールと、を備え、
　前記ダストシールは、  
　両端部が前記ロワーケースの前記アッパーケースとの対向面および前記アッパーケースの前記ロワーケースとの対向面と接触し、
　前記センタープレートは、
　前記センタープレートの外周側から径方向外方に延びて前記ダストシールと連結する連結部を有する。 For example, the sliding bearing of the present invention is
An upper case,
A lower case that is rotatably combined with the upper case to form an annular space with the upper case;
An annular center plate disposed in the annular space;
An annular dust seal disposed on the outer peripheral side of the center plate,
The dust seal is
Both end portions are in contact with a surface facing the upper case of the lower case and a surface facing the lower case of the upper case,
The center plate is
A connecting portion that extends radially outward from the outer peripheral side of the center plate and connects to the dust seal.
　ここで、前記滑り軸受は、支持対象の荷重を支持するものであり、
　前記アッパーケースは、
　前記ロワーケースとの対向面に形成された環状溝を有し、
　前記ロワーケースは、
　前記アッパーケースとの対向面に形成され、前記アッパーケースの前記環状溝に挿入されることにより前記環状空間を形成する環状突部を有し、
　前記センタープレートは、
　前記ロワーケースの前記環状突部上に載置され、前記アッパーケースの前記環状溝の溝底に形成された支持対象面と摺接することにより、前記アッパーケースおよび前記ロワーケース間の回動を許容しつつ、前記アッパーケースに加えられた前記支持対象の荷重を支持し、
　前記ダストシールは、
　前記ロワーケースの前記環状突部の外周側に配置されていてもよい。 Here, the sliding bearing supports a load to be supported,
The upper case is
Having an annular groove formed on the surface facing the lower case;
The lower case is
Formed on a surface facing the upper case, and having an annular protrusion that forms the annular space by being inserted into the annular groove of the upper case,
The center plate is
The upper case and the lower case are allowed to rotate by being placed on the annular protrusion of the lower case and in sliding contact with a support target surface formed on the groove bottom of the annular groove of the upper case. While supporting the load of the support object applied to the upper case,
The dust seal is
You may arrange | position at the outer peripheral side of the said annular protrusion of the said lower case.
　例えば、前記滑り軸受は、ストラット式サスペンションのストラットアッセンブリの回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持するものであり、
　前記アッパーケースは、前記ストラットアッセンブリが挿入された状態で当該ストラットアッセンブリの前記車体への取付機構に取り付けられ、
　前記ロワーケースは、前記ストラットアッセンブリが挿入された状態で前記ストラットアッセンブリに組み合わせられたコイルスプリングの上端部のばね座に取り付けられ、
　前記センタープレートは、前記ストラットアッセンブリが挿入された状態で前記環状空間に配置されるものでもよい。 For example, the sliding bearing supports the load of the vehicle body applied to the strut suspension while allowing the strut assembly of the strut suspension to rotate.
The upper case is attached to a mounting mechanism of the strut assembly to the vehicle body in a state where the strut assembly is inserted,
The lower case is attached to a spring seat at an upper end portion of a coil spring combined with the strut assembly in a state where the strut assembly is inserted,
The center plate may be disposed in the annular space in a state where the strut assembly is inserted.
　本発明では、アッパーケースおよびロワーケースを組み合わせることにより形成される環状空間において、両端部が環状空間の軸方向に対向する２つの壁面に接触する環状のダストシールを配置しているので、ダストシールに芯金を埋め込んで剛性を上げなくても、環状空間の軸方向に加わる支持対象の荷重に対するダストシールの反力によって、環状空間の外部に繋がる隙間を塞ぐのに十分なシール性を得ることができる。また、ダストシールは、センタープレートの外周側から径方向外方に延びる連結部によりセンタープレートに連結されているので、ダストシールを別部品として用意する必要がなくなり、滑り軸受の部品点数を減らすことができる。したがって、本発明によれば、より低コストで、塵埃、泥水等の侵入による摺動性能の低下を防止することができる。 In the present invention, in the annular space formed by combining the upper case and the lower case, the annular dust seal is disposed so that both end portions are in contact with the two wall surfaces facing the axial direction of the annular space. Even without embedding gold and increasing the rigidity, the sealing force sufficient to close the gap connected to the outside of the annular space can be obtained by the reaction force of the dust seal against the load to be supported applied in the axial direction of the annular space. Further, since the dust seal is connected to the center plate by a connecting portion extending radially outward from the outer peripheral side of the center plate, it is not necessary to prepare the dust seal as a separate part, and the number of parts of the slide bearing can be reduced. . Therefore, according to the present invention, it is possible to prevent a decrease in sliding performance due to intrusion of dust, muddy water, etc. at a lower cost.
図１（Ａ）、図１（Ｂ）および図１（Ｃ）は、本発明の一実施の形態に係る滑り軸受１の平面図、底面図および正面図であり、図１（Ｄ）は、図１（Ａ）に示す滑り軸受１のＡ－Ａ断面図である。1A, FIG. 1B, and FIG. 1C are a plan view, a bottom view, and a front view of a plain bearing 1 according to an embodiment of the present invention, and FIG. FIG. 2 is a cross-sectional view taken along the line AA of the plain bearing 1 shown in FIG. 図２（Ａ）は、図１（Ｄ）に示す滑り軸受１のＢ部拡大図であり、図２（Ｂ）は、図１（Ｄ）に示す滑り軸受１のＣ部拡大図である。2A is an enlarged view of a portion B of the plain bearing 1 shown in FIG. 1D, and FIG. 2B is an enlarged view of a portion C of the plain bearing 1 shown in FIG. 図３（Ａ）、図３（Ｂ）および図３（Ｃ）は、アッパーケース２の平面図、底面図および正面図であり、図３（Ｄ）は、図３（Ａ）に示すアッパーケース２のＤ－Ｄ断面図である。3A, 3B, and 3C are a plan view, a bottom view, and a front view of the upper case 2, and FIG. 3D is an upper case shown in FIG. FIG. 図４（Ａ）、図４（Ｂ）および図４（Ｃ）は、ロワーケース３の平面図、底面図および正面図であり、図４（Ｄ）は、図４（Ａ）に示すロワーケース３のＥ－Ｅ断面図である。4A, 4B, and 4C are a plan view, a bottom view, and a front view of the lower case 3, and FIG. 4D is a lower case shown in FIG. 4A. 3 is a sectional view taken along line EE of FIG. 図５（Ａ）、図５（Ｂ）および図５（Ｃ）は、ダストシール一体型センタープレート４の平面図、底面図および正面図であり、図５（Ｄ）は、図５（Ａ）に示すダストシール一体型センタープレート４のＦ－Ｆ断面図であり、図５（Ｅ）は、図５（Ｄ）に示すダストシール一体型センタープレート４のＧ部拡大図であり、図５（Ｆ）は、図５（Ａ）に示すダストシール一体型センタープレート４のＨ部拡大図である。5A, 5B, and 5C are a plan view, a bottom view, and a front view of the dust seal-integrated center plate 4, and FIG. 5D is shown in FIG. FIG. 5 (E) is an enlarged view of the G part of the dust seal integrated center plate 4 shown in FIG. 5 (D), and FIG. FIG. 6 is an enlarged view of a portion H of the dust seal integrated center plate 4 shown in FIG. 図６（Ａ）および図６（Ｂ）は、ダストシール一体型センタープレート４のダストシール部７の変形例７ａ、７ｂを説明するための図であり、図２（Ｂ）に相当する図である。6 (A) and 6 (B) are diagrams for explaining modified examples 7a and 7b of the dust seal portion 7 of the dust seal integrated center plate 4 and correspond to FIG. 2 (B). 図７は、ダストシール一体型センタープレート４の変形例４ａを説明するための図であり、図２（Ｂ）に相当する図である。FIG. 7 is a view for explaining a modification 4a of the dust seal-integrated center plate 4 and corresponds to FIG. 2 (B).
　以下、本発明の一実施の形態について説明する。 Hereinafter, an embodiment of the present invention will be described.
　図１（Ａ）、図１（Ｂ）および図１（Ｃ）は、本実施の形態に係る滑り軸受１の平面図、底面図および正面図であり、図１（Ｄ）は、図１（Ａ）に示す滑り軸受１のＡ－Ａ断面図である。また、図２（Ａ）は、図１（Ｄ）に示す滑り軸受１のＢ部拡大図であり、図２（Ｂ）は、図１（Ｄ）に示す滑り軸受１のＣ部拡大図である。 1A, FIG. 1B, and FIG. 1C are a plan view, a bottom view, and a front view of a plain bearing 1 according to the present embodiment, and FIG. FIG. 2 is a cross-sectional view taken along the line AA of the plain bearing 1 shown in FIG. 2A is an enlarged view of a portion B of the plain bearing 1 shown in FIG. 1D, and FIG. 2B is an enlarged view of a portion C of the plain bearing 1 shown in FIG. 1D. is there.
　本実施の形態に係る滑り軸受１は、ストラット式サスペンションのストラットアッセンブリ（不図示）を収容するための収容孔１０を備え、この収容孔１０に収容されたストラットアッセンブリの回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持する。図示するように、滑り軸受１は、アッパーケース２と、アッパーケース２と回動自在に組み合わされて、アッパーケース２との間に環状空間５を形成するロワーケース３と、この環状空間５に配置されたダストシール一体型センタープレート４と、図示していないが、環状空間５に充填された潤滑グリースと、を備えている。 The sliding bearing 1 according to the present embodiment includes a housing hole 10 for housing a strut assembly (not shown) of a strut suspension, and allows the strut assembly housed in the housing hole 10 to rotate. Supports the body load applied to the strut suspension. As shown in the figure, the plain bearing 1 includes an upper case 2, a lower case 3 that is rotatably combined with the upper case 2, and forms an annular space 5 between the upper case 2 and the annular space 5. Although not shown, the dust seal integrated center plate 4 and a lubricating grease filled in the annular space 5 are provided.
　アッパーケース２は、必要に応じて潤滑油が含浸されたポリアセタール樹脂等の滑り特性に優れた熱可塑性樹脂で形成され、ストラット式サスペンションのストラットアッセンブリが挿入された状態でこのストラットアッセンブリの車体への取付機構であるアッパーサポート（不図示）に取り付けられる。 The upper case 2 is formed of a thermoplastic resin having excellent sliding characteristics such as a polyacetal resin impregnated with lubricating oil as necessary, and the strut assembly strut assembly is inserted into the vehicle body in a state where the strut assembly is inserted. It is attached to an upper support (not shown) which is an attachment mechanism.
　図３（Ａ）、図３（Ｂ）および図３（Ｃ）は、アッパーケース２の平面図、底面図および正面図であり、図３（Ｄ）は、図３（Ａ）に示すアッパーケース２のＤ－Ｄ断面図である。 3A, 3B, and 3C are a plan view, a bottom view, and a front view of the upper case 2, and FIG. 3D is an upper case shown in FIG. FIG.
　図示するように、アッパーケース２は、ストラットアッセンブリを挿入するための挿入孔２０を備えた環状のアッパーケース本体２１と、アッパーケース本体２１の上面２２に形成され、アッパーサポートに取り付けるための取付面２３と、ロワーケース３に対向するアッパーケース本体２１の下面２４に形成され、ロワーケース３と回動自在に組み合わされることにより環状空間５を形成する環状溝２５と、環状溝２５の溝底２６に形成され、ダストシール一体型センタープレート４の後述のセンタープレート部６の軸受面６２（図５参照）と摺接する環状の支持対象面２７と、を備えている。 As shown in the drawing, the upper case 2 is formed on an annular upper case main body 21 having an insertion hole 20 for inserting a strut assembly, and an upper surface 22 of the upper case main body 21, and is attached to an upper support. 23, an annular groove 25 formed on the lower surface 24 of the upper case main body 21 facing the lower case 3 and rotatably combined with the lower case 3, and a groove bottom 26 of the annular groove 25. And an annular support target surface 27 that is in sliding contact with a bearing surface 62 (see FIG. 5) of a center plate portion 6 (described later) of the dust seal integrated center plate 4.
　環状溝２５の溝底２６において、支持対象面２７の外周側には、溝底２６から下面２４の方向に突出した環状の防壁２８が形成されている。この防壁２８は、環状空間５に配置されたダストシール一体型センタープレート４のセンタープレート部６の外周側を囲んでおり、ストラット式サスペンションに荷重が加わった場合に、環状空間５に充填された潤滑グリースがダストシール一体型センタープレート４のセンタープレート部６の軸受面６２上から径方向外方へ押し出されるのを阻止する。 In the groove bottom 26 of the annular groove 25, an annular barrier wall 28 that protrudes from the groove bottom 26 toward the lower surface 24 is formed on the outer peripheral side of the support target surface 27. The barrier wall 28 surrounds the outer peripheral side of the center plate portion 6 of the dust seal-integrated center plate 4 disposed in the annular space 5, and lubricates the annular space 5 when a load is applied to the strut suspension. The grease is prevented from being pushed radially outward from the bearing surface 62 of the center plate portion 6 of the dust seal integrated center plate 4.
　ロワーケース３は、ポリアミド樹脂等の熱可塑性樹脂を用いた樹脂成形体であり、ストラット式サスペンションのストラットアッセンブリが挿入された状態でストラット式サスペンションのコイルスプリング（不図示）上端部のばね座であるアッパースプリングシート（不図示）に取り付けられる。 The lower case 3 is a resin molded body using a thermoplastic resin such as polyamide resin, and is a spring seat at the upper end of a coil spring (not shown) of the strut suspension in a state where the strut assembly of the strut suspension is inserted. It is attached to an upper spring seat (not shown).
　図４（Ａ）、図４（Ｂ）および図４（Ｃ）は、ロワーケース３の平面図、底面図および正面図であり、図４（Ｄ）は、図４（Ａ）に示すロワーケース３のＥ－Ｅ断面図である。 4A, 4B, and 4C are a plan view, a bottom view, and a front view of the lower case 3, and FIG. 4D is a lower case shown in FIG. 4A. 3 is a sectional view taken along line EE of FIG.
　図示するように、ロワーケース３は、ストラットアッセンブリを挿入するための挿入孔３０を備えた筒状のロワーケース本体３１と、アッパーケース２に対向するロワーケース本体３１の上面３２に形成され、ロワーケース３がアッパーケース２と回動自在に組み合わされた場合に、アッパーケース２のアッパーケース本体２１の下面２４に形成された環状溝２５に挿入されて環状空間５を形成する環状突部３３と、ロワーケース本体３１の側面３４から径方向外方に張り出したフランジ３５と、を備えている。 As shown in the figure, the lower case 3 is formed on a cylindrical lower case body 31 having an insertion hole 30 for inserting a strut assembly and an upper surface 32 of the lower case body 31 facing the upper case 2. When the case 3 is rotatably combined with the upper case 2, an annular protrusion 33 that is inserted into the annular groove 25 formed in the lower surface 24 of the upper case body 21 of the upper case 2 to form the annular space 5; , And a flange 35 projecting radially outward from the side surface 34 of the lower case main body 31.
　環状突部３３の上面３３０には、ダストシール一体型センタープレート４のセンタープレート部６を載置するための載置面３３１が形成され、さらに、この載置面３３１の外周側には、円弧状に突出した回り止め３３２が円周方向に等間隔で複数形成されている。回り止め３３２は、ダストシール一体型センタープレート４の後述の連結アーム部８（図５参照）と円周方向に係合して、ダストシール一体型センタープレート４の回転を阻止するとともに、ダストシール一体型センタープレート４のセンタープレート部６の外周側と当接して、センタープレート部６の径方向外方への変形を阻止する。 A mounting surface 331 for mounting the center plate portion 6 of the dust seal integrated center plate 4 is formed on the upper surface 330 of the annular protrusion 33, and an arcuate shape is formed on the outer peripheral side of the mounting surface 331. A plurality of detents 332 protruding in the circumferential direction are formed at equal intervals in the circumferential direction. The rotation stopper 332 engages with a connecting arm portion 8 (see FIG. 5), which will be described later, of the dust seal-integrated center plate 4 in the circumferential direction to prevent the dust seal-integrated center plate 4 from rotating and the dust seal-integrated center plate. It contacts the outer peripheral side of the center plate portion 6 of the plate 4 to prevent the center plate portion 6 from deforming radially outward.
　なお、本実施の形態では、６個の回り止め３３２を設けているが、ダストシール一体型センタープレート４の連結アーム部８の数と同数の回り止め３３２を設ければよい。この際、回り止め３３２の円弧の長さを調節して、連結アーム部８が配置される隙間３３４の幅を一定にすることが好ましい。 In the present embodiment, six detents 332 are provided, but the same number of detents 332 as the number of connecting arm portions 8 of the dust seal integrated center plate 4 may be provided. At this time, it is preferable to adjust the length of the arc of the rotation stopper 332 so that the width of the gap 334 in which the connection arm portion 8 is disposed is made constant.
　フランジ３５は、ロワーケース本体３１の上面３２側において、ロワーケース本体３１の外周側の側面３４から径方向外方に張り出しており、フランジ３５の下面３６がアッパースプリングシートに取り付けられる。 The flange 35 protrudes radially outward from the outer peripheral side surface 34 of the lower case main body 31 on the upper surface 32 side of the lower case main body 31, and the lower surface 36 of the flange 35 is attached to the upper spring seat.
　ダストシール一体型センタープレート４は、必要に応じて潤滑油が含浸されたポリオレフィン樹脂等の摺動特性に優れた熱可塑性樹脂で形成され、アッパーケース２およびロワーケース３間の自在な回動を許容しつつ、アッパーケース２に伝達されたストラット式サスペンションに加わる車体の荷重を支持する。また、環状空間５の外部に繋がる隙間を塞いで、塵埃等の異物が環状空間５に侵入するのを防止する。 The dust seal integrated center plate 4 is formed of a thermoplastic resin having excellent sliding characteristics such as a polyolefin resin impregnated with a lubricating oil as required, and allows free rotation between the upper case 2 and the lower case 3. At the same time, the vehicle body load applied to the strut suspension transmitted to the upper case 2 is supported. In addition, a gap connected to the outside of the annular space 5 is closed to prevent foreign matters such as dust from entering the annular space 5.
　図５（Ａ）、図５（Ｂ）および図５（Ｃ）は、ダストシール一体型センタープレート４の平面図、底面図および正面図であり、図５（Ｄ）は、図５（Ａ）に示すダストシール一体型センタープレート４のＦ－Ｆ断面図であり、図５（Ｅ）は、図５（Ｄ）に示すダストシール一体型センタープレート４のＧ部拡大図であり、図５（Ｆ）は、図５（Ａ）に示すダストシール一体型センタープレート４のＨ部拡大図である。 5A, 5B, and 5C are a plan view, a bottom view, and a front view of the dust seal-integrated center plate 4, and FIG. 5D is shown in FIG. FIG. 5 (E) is an enlarged view of the G part of the dust seal integrated center plate 4 shown in FIG. 5 (D), and FIG. FIG. 6 is an enlarged view of a portion H of the dust seal integrated center plate 4 shown in FIG.
　図示するように、ダストシール一体型センタープレート４は、環状のセンタープレート部６と、センタープレート部６の外周側に配置された筒状のダストシール部７と、センタープレート部６およびダストシール部７を連結する連結アーム部８と、を備えている。 As shown in the figure, the dust seal-integrated center plate 4 connects an annular center plate portion 6, a cylindrical dust seal portion 7 disposed on the outer peripheral side of the center plate portion 6, and the center plate portion 6 and the dust seal portion 7. Connecting arm portion 8 to be connected.
　センタープレート部６は、環状のセンタープレート本体６０と、センタープレート本体６０の上面６１に形成された軸受面６２と、センタープレート本体６０の下面６３の内周側から軸方向下方に張り出して形成された筒状のリブ６４と、を備える。 The center plate portion 6 is formed to project downward in the axial direction from the inner peripheral side of the annular center plate main body 60, the bearing surface 62 formed on the upper surface 61 of the center plate main body 60, and the lower surface 63 of the center plate main body 60. And a cylindrical rib 64.
　軸受面６２には、潤滑グリース溜め６５が多数形成されている。なお、図５では、図面の簡略化のため、一部の潤滑グリース溜め６５にのみ符号を付している。 A large number of lubricating grease reservoirs 65 are formed on the bearing surface 62. Note that, in FIG. 5, only a part of the lubricating grease reservoir 65 is denoted by a symbol for simplification of the drawing.
　リブ６４は、センタープレート本体６０の下面６３とロワーケース３のロワーケース本体３１に設けられた環状突部３３の載置面３３１とが接触するようにして、センタープレート４がロワーケース３上に載置された場合に、この環状突部３３の内側に挿入される。 The rib 64 is formed so that the lower surface 63 of the center plate body 60 and the mounting surface 331 of the annular protrusion 33 provided on the lower case body 31 of the lower case 3 are in contact with each other, so that the center plate 4 is placed on the lower case 3. When placed, it is inserted inside the annular projection 33.
　ダストシール部７は、軸方向の一方の端部７０がアッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６に下方側に突出して形成された防壁２８の下端部２８０と当接し、軸方向の他方の端部７１がロワーケース３のロワーケース本体３１の環状突部３３の上面３３０と当接する。これにより、環状空間５の外部に繋がる隙間を塞いで、塵埃等の異物がセンタープレート部６の軸受面６２と、アッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６に形成された支持対象面２７との間に侵入するのを阻止する。 The dust seal portion 7 is in contact with a lower end portion 280 of a barrier 28 formed by projecting downward on the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2 in the axial direction. The other end 71 in the direction comes into contact with the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3. Thereby, a gap connected to the outside of the annular space 5 is closed, and foreign matters such as dust are formed on the bearing surface 62 of the center plate portion 6 and the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2. Intrusion between the support target surface 27 is prevented.
　また、ダストシール部７は、センタープレート部６より薄肉に形成され、軸方向断面形状において、アッパーケース２側と当接する一方の端部７０が径方向外方に傾斜している。このため、ダストシール部７の一方の端部７０は、アッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６に形成された防壁２８に撓みながら接触する（図２参照）。ストラット式サスペンションに加わる車体の荷重に対して作用するダストシール部７の反力によって、環状空間５の外部に繋がる隙間を塞ぐのに十分なシール性を得ている。 Further, the dust seal portion 7 is formed thinner than the center plate portion 6, and one end portion 70 in contact with the upper case 2 side is inclined radially outward in the axial sectional shape. Therefore, one end portion 70 of the dust seal portion 7 contacts the barrier wall 28 formed on the groove bottom 26 of the annular groove 25 of the upper case main body 21 of the upper case 2 while being bent (see FIG. 2). The reaction force of the dust seal portion 7 acting on the load of the vehicle body applied to the strut type suspension provides a sufficient sealing performance to close the gap connected to the outside of the annular space 5.
　連結アーム部８は、センタープレート部６の外周側から径方向外方に延びてダストシール部７と連結する。また、連結アーム部８は、ロワーケース３のロワーケース本体３１の環状突部３３の載置面３３１に複数形成された回り止め３３２同士の隙間３３４よりも狭い円周方向の幅を有し、この隙間３３４に配置されることにより、センタープレート部６がこの載置面３３１に載置される。そして、連結アーム部８が回り止め３３２と円周方向に係合することにより、ダストシール一体型センタープレート４の回転が阻止される。なお、本実施の形態では、６個の連結アーム部８を設けているが、連結アーム部８は少なくとも１個あればよい。 The connecting arm portion 8 extends radially outward from the outer peripheral side of the center plate portion 6 and is connected to the dust seal portion 7. Further, the connecting arm portion 8 has a circumferential width narrower than a gap 334 between the rotation stoppers 332 formed on the mounting surface 331 of the annular protrusion 33 of the lower case body 31 of the lower case 3, By being arranged in the gap 334, the center plate portion 6 is placed on the placement surface 331. Then, when the connecting arm portion 8 is engaged with the rotation stopper 332 in the circumferential direction, the rotation of the dust seal integrated center plate 4 is prevented. In the present embodiment, six connection arm portions 8 are provided, but at least one connection arm portion 8 may be provided.
　上記構成を有する本実施の形態に係る滑り軸受１において、ダストシール一体型センタープレート４は、連結アーム部８とロワーケース３のロワーケース本体３１の環状突部３３の載置面３３１に形成された回り止め３３２との円周方向の結合により回転が阻止された状態で、センタープレート部６がこの載置面３３１に載置され、センタープレート部６の軸受面６２がアッパーケース２のアッパーケース本体２１の下面２４に形成された環状溝２５の支持対象面２７と摺接する。このため、ダストシール一体型センタープレート４は、ロワーケース３のフランジ３５の下面３６に取り付けられたアッパースプリングシートおよびストラット式サスペンションのコイルスプリングによって支持され、アッパーケース２およびロワーケース３間の回動を許容しつつ、アッパーケース４に伝達されたストラット式サスペンションに加わる車体の荷重を支持する。 In the sliding bearing 1 according to the present embodiment having the above configuration, the dust seal integrated center plate 4 is formed on the mounting surface 331 of the annular protrusion 33 of the lower case main body 31 of the lower arm 3 and the connecting arm portion 8. The center plate portion 6 is placed on the placement surface 331 in a state where the rotation is prevented by the circumferential coupling with the rotation stopper 332, and the bearing surface 62 of the center plate portion 6 is the upper case body of the upper case 2. 21 is in sliding contact with the support target surface 27 of the annular groove 25 formed on the lower surface 24 of the member 21. For this reason, the dust seal integrated center plate 4 is supported by the upper spring seat attached to the lower surface 36 of the flange 35 of the lower case 3 and the coil spring of the strut suspension, and rotates between the upper case 2 and the lower case 3. While allowing, the load of the vehicle body applied to the strut suspension transmitted to the upper case 4 is supported.
　以上、本発明の一実施の形態について説明した。 The embodiment of the present invention has been described above.
　本実施の形態では、アッパーケース２およびロワーケース３を組み合わせることにより形成される環状空間５において、ダストシール部７の軸方向の一方の端部７０がアッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６より下方側に突出して形成された防壁２８と当接し、軸方向の他方の端部７１がロワーケース３のロワーケース本体３１の環状突部３３の上面３３０側と当接するように、ダストシール一体型センタープレート４を環状空間５に配置しているので、ダストシール部７に芯金を埋め込んで剛性を上げなくても、ストラット式サスペンションに加わる車体の荷重に対するダストシール部７の反力によって、環状空間５の外部に繋がる隙間を塞ぐのに十分なシール性を得ることができる。また、ダストシール部７は、センタープレート部６の外周側から径方向外方に延びる連結アーム部８によりセンタープレート部６に連結され、センタープレート部６と一体的に形成されているので、ダストシール部７を別部品として用意する必要がなくなり、滑り軸受１の部品点数を減らすことができる。したがって、本実施の形態によれば、より低コストで、塵埃、泥水等の侵入による摺動性能の低下を防止することができる。 In the present embodiment, in the annular space 5 formed by combining the upper case 2 and the lower case 3, one end 70 in the axial direction of the dust seal portion 7 is the annular groove 25 of the upper case body 21 of the upper case 2. The other end 71 in the axial direction is in contact with the upper surface 330 side of the annular protrusion 33 of the lower case body 31 of the lower case 3. Since the dust seal integrated center plate 4 is disposed in the annular space 5, the reaction force of the dust seal portion 7 against the load of the vehicle body applied to the strut suspension does not increase the rigidity by embedding the core metal in the dust seal portion 7. It is possible to obtain a sufficient sealing property to close the gap connected to the outside of the annular space 5. Further, since the dust seal portion 7 is connected to the center plate portion 6 by a connecting arm portion 8 extending radially outward from the outer peripheral side of the center plate portion 6 and is integrally formed with the center plate portion 6, the dust seal portion 7 need not be prepared as a separate part, and the number of parts of the sliding bearing 1 can be reduced. Therefore, according to the present embodiment, it is possible to prevent a decrease in sliding performance due to intrusion of dust, muddy water, and the like at a lower cost.
　また、本実施の形態では、ロワーケース３のロワーケース本体３１の環状突部３３の上面３３０に形成された載置面３３１の外周側に、円弧状に突出した回り止め３３２を形成している。この回り止め３３２は、ダストシール一体型センタープレート４の連結アーム部８と円周方向に係合して、ダストシール一体型センタープレート４の回転を阻止するとともに、ダストシール一体型センタープレート４のセンタープレート部６の外周側と当接し、ストラット式サスペンションに加わる車体の荷重によってセンタープレート部６が径方向外方へ変形するのを阻止する。したがって、本実施の形態によれば、センタープレート部６の径方向外方への変形によりダストシール部７の配置位置がずれて、ダストシール部７のシール性が低下するのを防止することができる。 Further, in the present embodiment, the rotation stopper 332 protruding in an arc shape is formed on the outer peripheral side of the mounting surface 331 formed on the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3. . The rotation stopper 332 engages with the connecting arm portion 8 of the dust seal integrated center plate 4 in the circumferential direction to prevent the dust seal integrated center plate 4 from rotating and the center plate portion of the dust seal integrated center plate 4. 6 abuts against the outer peripheral side of the center plate 6 and prevents the center plate portion 6 from being deformed radially outward by the load of the vehicle body applied to the strut suspension. Therefore, according to this Embodiment, it can prevent that the arrangement position of the dust seal part 7 shifts | deviates by the deformation | transformation to the radial direction outward of the center plate part 6, and the sealing performance of the dust seal part 7 falls.
　また、本実施の形態では、ダストシール一体型センタープレート４のセンタープレート部６の軸受面６２に潤滑グリース溜め６５を多数形成しているので、軸受面６２上により多くの潤滑グリースを保持することができる。このため、軸受面６２を潤滑グリース膜で覆うことができ、より長期に亘り、ストラット式サスペンションのストラットアッセンブリの円滑な回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持することができる。 Further, in this embodiment, since a large number of lubricating grease reservoirs 65 are formed on the bearing surface 62 of the center plate portion 6 of the dust seal integrated center plate 4, more lubricating grease can be retained on the bearing surface 62. it can. For this reason, the bearing surface 62 can be covered with a lubricating grease film, and the load of the vehicle body applied to the strut suspension can be supported for a longer period while allowing the strut assembly of the strut suspension to rotate smoothly. it can.
　また、本実施の形態では、アッパーケース２のアッパーケース本体２１の下面２４に形成された環状溝２５の溝底２６に、アッパーケース２およびロワーケース３を組み合わせることにより形成される環状空間５に配置されたダストシール一体型センタープレート４のセンタープレート部６の外周側を囲む環状の防壁２８を設けている。この防壁２８により、ストラット式サスペンションに荷重が加わった場合に、環状空間５に充填された潤滑グリースがセンタープレート部６の軸受面６２上から径方向外方に押し出されるのを防止して、軸受面６２をより確実に潤滑グリース膜で覆うことができる。したがって、より長期に亘り、ストラット式サスペンションのストラットアッセンブリの円滑な回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持することができる。 In the present embodiment, the annular space 5 formed by combining the upper case 2 and the lower case 3 with the groove bottom 26 of the annular groove 25 formed on the lower surface 24 of the upper case body 21 of the upper case 2. An annular barrier 28 surrounding the outer peripheral side of the center plate portion 6 of the disposed dust seal-integrated center plate 4 is provided. The barrier wall 28 prevents the lubricating grease filled in the annular space 5 from being pushed radially outward from the bearing surface 62 of the center plate portion 6 when a load is applied to the strut suspension. The surface 62 can be more reliably covered with the lubricating grease film. Therefore, the load of the vehicle body applied to the strut suspension can be supported for a longer period while allowing the strut assembly of the strut suspension to smoothly rotate.
　なお、本発明は、上記の実施の形態に限定されるものではなく、その要旨の範囲内で数々の変形は可能である。 It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the gist.
　例えば、上記の実施の形態では、ロワーケース３のロワーケース本体３１の環状突部３３の上面３３０に形成された載置面３３１の外周側に、回り止め３３２を形成しているが、本発明はこれに限定されない。アッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６に形成された支持対象面２７の外周側に回り止めを形成し、この回り止めを、ダストシール一体型センタープレート４の連結アーム部８と円周方向に係合させて、ダストシール一体型センタープレート４の回転を阻止するとともに、ダストシール一体型センタープレート４のセンタープレート部６の外周側と当接させて、ストラット式サスペンションに加わる車体の荷重によってセンタープレート部６が径方向外方へ変形するのを阻止してもよい。 For example, in the above embodiment, the detent 332 is formed on the outer peripheral side of the mounting surface 331 formed on the upper surface 330 of the annular protrusion 33 of the lower case body 31 of the lower case 3. Is not limited to this. A rotation stopper is formed on the outer peripheral side of the support target surface 27 formed on the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2, and this rotation stopper is connected to the connecting arm portion 8 of the dust seal integrated center plate 4. To prevent the rotation of the dust seal-integrated center plate 4 and contact with the outer peripheral side of the center plate portion 6 of the dust seal-integrated center plate 4 so as to be applied to the strut suspension. The center plate portion 6 may be prevented from being deformed radially outward by the load.
　また、上記の実施の形態では、ダストシール一体型センタープレート４のダストシール部７の軸方向の一方の端部７０を、アッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６より下方側に突出して形成された防壁２８に当接させることにより、環状溝２５の溝底２６に当接させているが、環状溝２５の溝底２６に直接当接させてもよい。 Further, in the above-described embodiment, one axial end portion 70 of the dust seal portion 7 of the dust seal integrated center plate 4 is positioned below the groove bottom 26 of the annular groove 25 of the upper case body 21 of the upper case 2. Although it is made to contact | abut to the groove bottom 26 of the annular groove 25 by making it contact | abut to the barrier wall 28 formed protruding, you may make it contact | abut directly to the groove bottom 26 of the annular groove 25.
　また、上記の実施の形態では、ダストシール一体型センタープレート４の軸方向断面形状において、アッパーケース２のアッパーケース本体２１の環状溝２５の溝底２６側と当接するダストシール部７の軸方向の一方の端部７０を径方向外方に傾斜させている（図２参照）。しかし、本発明はこれに限定されない。ダストシール部７は、軸方向断面形状において、両端部７０、７１の少なくとも一方が径方向外方あるいは径方向内方に傾斜していればよい。 Further, in the above embodiment, in the axial cross-sectional shape of the dust seal integrated center plate 4, one axial direction of the dust seal portion 7 that contacts the groove bottom 26 side of the annular groove 25 of the upper case body 21 of the upper case 2. The end portion 70 is inclined radially outward (see FIG. 2). However, the present invention is not limited to this. The dust seal portion 7 may have an axial cross-sectional shape in which at least one of the both end portions 70 and 71 is inclined radially outward or radially inward.
　例えば、図６（Ａ）に示すダストシール部７ａのように、軸方向断面形状において、両端部７０、７１を径方向外方に傾斜させてもよい。あるいは、図６（Ｂ）に示すダストシール部７ｂのように、軸方向断面形状において、ロワーケース３のロワーケース本体３１の環状突部３３の上面３３０側と当接する端部７１を、径方向内方に傾斜させてもよい。 For example, like the dust seal portion 7a shown in FIG. 6A, the end portions 70 and 71 may be inclined radially outward in the axial cross-sectional shape. Alternatively, as in the dust seal portion 7b shown in FIG. 6B, the end portion 71 that is in contact with the upper surface 330 side of the annular protrusion 33 of the lower case main body 31 of the lower case 3 is radially You may incline in the direction.
　また、上記の実施の形態において、アッパーケース２のアッパーケース本体２１の環状溝２５の内周側壁面２９とロワーケース３のロワーケース本体３１の環状突部３３の内周側壁面３３５との隙間５０（図２参照）を介して、環状空間５に塵埃、泥水等が浸入する可能性があるならば、この隙間５０を塞ぐダストシールを追加してもよい。 Further, in the above embodiment, the gap between the inner peripheral side wall surface 29 of the annular groove 25 of the upper case body 21 of the upper case 2 and the inner peripheral side wall surface 335 of the annular protrusion 33 of the lower case main body 31 of the lower case 3. If there is a possibility that dust, muddy water or the like may enter the annular space 5 via 50 (see FIG. 2), a dust seal that closes the gap 50 may be added.
　例えば、図７に示すダストシール一体型センタープレート４ａのように、センタープレート部６のリブ６４のロワーケース３側の端部６４０に、環状空間５に繋がる隙間５０を塞ぐダストシール部９を一体的に形成してもよい。 For example, like the dust seal integrated center plate 4 a shown in FIG. 7, the dust seal portion 9 that closes the gap 50 connected to the annular space 5 is integrated with the end portion 640 of the rib 64 of the center plate portion 6 on the lower case 3 side. It may be formed.
　また、上記の実施の形態では、ダストシール一体型センタープレート４をロワーケース３に載置し固定しているが、ダストシール一体型センタープレート４をロワーケース３に対して回動自在に載置してもよい。すなわち、センタープレート部６の上面６０と同様に、センタープレート部６の下面６３にも軸受面を形成し、この軸受面を、ロワーケース３のロワーケース本体３１の上面３２に形成された環状突部３３の載置面３３１と摺動可能に接触させてもよい。この場合、環状突部３３の載置面３３１の外周側に配置される回り止め３３２は不要である。また、センタープレート部６の下面６３に形成された軸受面により多くの潤滑グリースを保持させるため、この軸受面にも潤滑グリース溜めを多数形成してもよい。 In the above embodiment, the dust seal integrated center plate 4 is placed and fixed on the lower case 3, but the dust seal integrated center plate 4 is rotatably mounted on the lower case 3. Also good. That is, similarly to the upper surface 60 of the center plate portion 6, a bearing surface is also formed on the lower surface 63 of the center plate portion 6, and this bearing surface is formed on the upper surface 32 of the lower case body 31 of the lower case 3. You may make it contact with the mounting surface 331 of the part 33 so that sliding is possible. In this case, the rotation stopper 332 disposed on the outer peripheral side of the mounting surface 331 of the annular protrusion 33 is not necessary. Further, since a large amount of lubricating grease is held on the bearing surface formed on the lower surface 63 of the center plate portion 6, a large number of lubricating grease reservoirs may be formed on this bearing surface.
　また、本発明の滑り軸受は、ストラット式サスペンションを含む様々な機構において、軸部材の回動を許容しつつ、この軸部材に加わる荷重を支持する滑り軸受に広く適用可能である。 Further, the slide bearing of the present invention can be widely applied to a slide bearing that supports a load applied to the shaft member while allowing the shaft member to rotate in various mechanisms including a strut suspension.
　１：滑り軸受、　２：アッパーケース、　３：ロワーケース、　４：ダストシール一体型センタープレート、　５：環状空間、　６：センタープレート部、　７、７ａ、７ｂ：ダストシール部、　８：連結アーム部、　９：ダストシール部、　１０：滑り軸受１の収容孔、　２０：アッパーケース２の挿入孔、　２１：アッパーケース本体、　２２：アッパーケース本体２１の上面、　２３：アッパーケース本体２１の取付面、　２４：アッパーケース本体２１の下面、　２５：アッパーケース本体２１の環状溝、　２６：環状溝２５の溝底、　２７：アッパーケース本体２１の支持対象面、　２８：アッパーケース本体２１の防壁、　２９：環状溝２５の内周側壁面、　３０：ロワーケース３の挿入孔、　３１：ロワーケース本体、　３２：ロワーケース本体３１の上面、　３３：ロワーケース本体３１の環状突部、　３４：ロワーケース本体３１の側面、　３５：ロワーケース本体３１のフランジ、　３６：フランジ３５の下面、　５０：環状空間５に繋がる隙間、　６０：センタープレート本体、　６１：センタープレート本体６０の上面、　６２：センタープレート本体６０の軸受面、　６３：センタープレート本体６０の下面、　６４：センタープレート本体６０のリブ、　６５：軸受面６２の潤滑グリース溜め、　７０、７１：ダストシール部７、７a、７ｂの軸方向の端部、　２８０：防壁２８の下端部、　３３０：環状突部３３の上面、　３３１：ロワーケース本体３１の載置面、　３３２：ロワーケース本体３１の回り止め、　３３４：回り止め３３２同士の隙間、　３３５：環状突部３３の内周側壁面、　６４０：リブ６４の端部
  1: sliding bearing, 2: upper case, 3: lower case, 4: dust seal integrated center plate, 5: annular space, 6: center plate portion, 7, 7a, 7b: dust seal portion, 8: connecting arm portion, 9 : Dust seal part, 10: Housing hole of the slide bearing 1, 20: Insertion hole of the upper case 2, 21: Upper case main body, 22: Upper surface of the upper case main body 21, 23: Mounting surface of the upper case main body 21, 24: Upper Lower surface of the case body 21, 25: annular groove of the upper case body 21, 26: groove bottom of the annular groove 25, 27: support surface of the upper case body 21, 28: barrier of the upper case body 21, 29: annular groove 25 30: insertion hole of the lower case 3, 31: lower case body, 32: upper surface of the lower case body 31, 33: An annular protrusion of the lower case body 31, 34: A side surface of the lower case body 31, 35: A flange of the lower case body 31, 36: A lower surface of the flange 35, 50: A gap connected to the annular space 5, 60: A center plate body 61: upper surface of center plate main body 60, 62: bearing surface of center plate main body 60, 63: lower surface of center plate main body 60, 64: rib of center plate main body 60, 65: reservoir for lubricating grease on bearing surface 62, 70, 71: Axial end portions of the dust seal portions 7, 7a, 7b, 280: Lower end portion of the barrier 28, 330: Upper surface of the annular projection 33, 331: Placement surface of the lower case main body 31, 332: Lower case main body 31 334: clearance between the rotation stoppers 332, 335: inner peripheral side wall surface of the annular protrusion 33, 640: rib 6 End of

Claims (6)

  1. 　アッパーケースと、
    　前記アッパーケースに回動自在に組み合わされて、当該アッパーケースとの間に環状空間を形成するロワーケースと、
    　前記環状空間に配置された環状のセンタープレートと、
    　前記センタープレートの外周側に配置された環状のダストシールと、を備え、
    　前記ダストシールは、  
    　両端部が前記ロワーケースの前記アッパーケースとの対向面および前記アッパーケースの前記ロワーケースとの対向面と接触し、
    　前記センタープレートは、
    　前記センタープレートの外周側から径方向外方に延びて前記ダストシールと連結する連結部を有する
    　ことを特徴とする滑り軸受。     An upper case,
    A lower case that is rotatably combined with the upper case to form an annular space with the upper case;
    An annular center plate disposed in the annular space;
    An annular dust seal disposed on the outer peripheral side of the center plate,
    The dust seal is
    Both end portions are in contact with a surface facing the upper case of the lower case and a surface facing the lower case of the upper case,
    The center plate is
    A sliding bearing comprising a connecting portion extending radially outward from the outer peripheral side of the center plate and connected to the dust seal.
  2. 　請求項１に記載の滑り軸受であって、
    　前記ダストシールは、
    　軸方向断面形状において、少なくとも一方の端部が径方向外方あるいは径方向内方に傾斜している
    　ことを特徴とする滑り軸受。     The sliding bearing according to claim 1,
    The dust seal is
    A sliding bearing characterized in that, in an axial cross-sectional shape, at least one end is inclined radially outward or radially inward.
  3. 　請求項１または２に記載の滑り軸受であって、
    　前記ロワーケースの前記アッパーケースとの対向面あるいは前記アッパーケースの前記ロワーケースとの対向面に形成され、前記センタープレートの前記連結部と円周方向に係合して前記センタープレートおよび前記ダストシールの回転を防止するとともに、前記センタープレートの外周側と当接して前記センタープレートの径方向外方への変形を阻止する回り止めをさらに有する
    　ことを特徴とする滑り軸受。     The sliding bearing according to claim 1 or 2,
    The lower case is formed on a surface facing the upper case or a surface facing the lower case of the upper case, and is engaged with the connecting portion of the center plate in a circumferential direction so that the center plate and the dust seal A slide bearing, further comprising a rotation stopper that prevents rotation and prevents deformation of the center plate in a radially outward direction by contacting the outer periphery of the center plate.
  4. 　請求項１または２に記載の滑り軸受であって
    　前記滑り軸受は、支持対象の荷重を支持するものであり、
    　前記アッパーケースは、
    　前記ロワーケースとの対向面に形成された環状溝を有し、
    　前記ロワーケースは、
    　前記アッパーケースとの対向面に形成され、前記アッパーケースの前記環状溝に挿入されることにより前記環状空間を形成する環状突部を有し、
    　前記センタープレートは、
    　前記ロワーケースの前記環状突部上に載置され、前記アッパーケースの前記環状溝の溝底に形成された支持対象面と摺接することにより、前記アッパーケースおよび前記ロワーケース間の回動を許容しつつ、前記アッパーケースに加えられた前記支持対象の荷重を支持し、
    　前記ダストシールは、
    　前記ロワーケースの前記環状突部の外周側に配置されていている
    　ことを特徴とする滑り軸受。     The sliding bearing according to claim 1 or 2, wherein the sliding bearing supports a load to be supported,
    The upper case is
    Having an annular groove formed on the surface facing the lower case;
    The lower case is
    Formed on a surface facing the upper case, and having an annular protrusion that forms the annular space by being inserted into the annular groove of the upper case,
    The center plate is
    The upper case and the lower case are allowed to rotate by being placed on the annular protrusion of the lower case and in sliding contact with a support target surface formed on the groove bottom of the annular groove of the upper case. While supporting the load of the support object applied to the upper case,
    The dust seal is
    The sliding bearing is arranged on the outer peripheral side of the annular protrusion of the lower case.
  5. 　請求項３に記載の滑り軸受であって、
    　前記滑り軸受は、支持対象の荷重を支持するものであり、
    　前記アッパーケースは、
    　前記ロワーケースとの対向面に形成された環状溝を有し、
    　前記ロワーケースは、
    　前記アッパーケースとの対向面に形成され、前記アッパーケースの前記環状溝に挿入されることにより前記環状空間を形成する環状突部を有し、
    　前記センタープレートは、
    　前記ロワーケースの前記環状突部上に載置され、前記アッパーケースの前記環状溝の溝底に形成された支持対象面と摺接することにより、前記アッパーケースおよび前記ロワーケース間の回動を許容しつつ、前記アッパーケースに加えられた前記支持対象の荷重を支持し、
    　前記ダストシールは、
    　前記ロワーケースの前記環状突部の外周側に装着されており、
    　前記回り止めは、
    　前記ロワーケースの前記環状突部上に複数形成され、前記センタープレートの外周側を囲むように、少なくとも前記センタープレートの前記連結部の円周方向の幅より大きな間隔をあけて円周状に配置された円弧状突部である
    　ことを特徴とする滑り軸受。     The sliding bearing according to claim 3,
    The sliding bearing supports a load to be supported,
    The upper case is
    Having an annular groove formed on the surface facing the lower case;
    The lower case is
    Formed on a surface facing the upper case, and having an annular protrusion that forms the annular space by being inserted into the annular groove of the upper case,
    The center plate is
    The upper case and the lower case are allowed to rotate by being placed on the annular protrusion of the lower case and in sliding contact with a support target surface formed on the groove bottom of the annular groove of the upper case. While supporting the load of the support object applied to the upper case,
    The dust seal is
    It is mounted on the outer peripheral side of the annular protrusion of the lower case,
    The detent is
    Plurally formed on the annular protrusion of the lower case, and arranged circumferentially at an interval larger than at least the circumferential width of the connecting portion of the center plate so as to surround the outer peripheral side of the center plate A sliding bearing characterized by having an arcuate protruding portion.
  6. 　請求項１ないし５のいずれか一項に記載の滑り軸受であって、
    　前記滑り軸受は、
    　ストラット式サスペンションのストラットアッセンブリの回動を許容しつつ、ストラット式サスペンションに加わる車体の荷重を支持するものであり、
    　前記アッパーケースは、
    　前記ストラットアッセンブリが挿入された状態で当該ストラットアッセンブリの前記車体への取付機構に取り付けられ、
    　前記ロワーケースは、
    　前記ストラットアッセンブリが挿入された状態で前記ストラットアッセンブリに組み合わせられたコイルスプリングの上端部のばね座に取り付けられ、
    　前記センタープレートは、
    　前記ストラットアッセンブリが挿入された状態で前記環状空間に配置される
    　ことを特徴とする滑り軸受。
          A sliding bearing according to any one of claims 1 to 5,
    The sliding bearing is
    It supports the load of the vehicle body applied to the strut suspension while allowing the strut assembly of the strut suspension to rotate.
    The upper case is
    The strut assembly is attached to a mounting mechanism of the strut assembly to the vehicle body,
    The lower case is
    The strut assembly is attached to a spring seat at the upper end of a coil spring combined with the strut assembly,
    The center plate is
    A slide bearing, wherein the strut assembly is disposed in the annular space in a state where the strut assembly is inserted.
PCT/JP2016/076348 2015-09-09 2016-09-07 Sliding bearing WO2017043547A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3282140A4 (en) * 2015-04-10 2019-01-09 Oiles Corporation Thrust bearing for vehicles
WO2019116952A1 (en) * 2017-12-12 2019-06-20 オイレス工業株式会社 Sliding bearing and method for manufacturing same
CN111007207A (en) * 2019-12-26 2020-04-14 重庆溢哲渝实业有限公司 Simple installation and dirt-proof humidity sensor module

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Publication number Priority date Publication date Assignee Title
JP6917290B2 (en) 2017-12-12 2021-08-11 オイレス工業株式会社 Plain bearing

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JPS5927347U (en) * 1982-08-16 1984-02-20 オイレス工業株式会社 strut thrust bearing
JP2013083303A (en) * 2011-10-07 2013-05-09 Oiles Corp Synthetic-resin sliding bearing

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JPS5927347U (en) * 1982-08-16 1984-02-20 オイレス工業株式会社 strut thrust bearing
JP2013083303A (en) * 2011-10-07 2013-05-09 Oiles Corp Synthetic-resin sliding bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3282140A4 (en) * 2015-04-10 2019-01-09 Oiles Corporation Thrust bearing for vehicles
WO2019116952A1 (en) * 2017-12-12 2019-06-20 オイレス工業株式会社 Sliding bearing and method for manufacturing same
CN111007207A (en) * 2019-12-26 2020-04-14 重庆溢哲渝实业有限公司 Simple installation and dirt-proof humidity sensor module

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